sesame cake

Kai is going to the book fair in Frankfurt this Friday, so he baked a cake for me, because I would have to spend the whole weekend alone at home.
Certainly, a self-made cake is absolutely not necessary to me. I have got enough delicious storage at the moment, and the supermarket is so convenient if anything I would typically desire. Nevertheless, it seems really important to him for having my daily need arranged by him.
Sure, it is not difficult for me to satisfy his will.